CN107462083B - Cross flow tower applied to multiple units and capable of running in partitioned mode - Google Patents
Cross flow tower applied to multiple units and capable of running in partitioned mode Download PDFInfo
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- CN107462083B CN107462083B CN201710823109.9A CN201710823109A CN107462083B CN 107462083 B CN107462083 B CN 107462083B CN 201710823109 A CN201710823109 A CN 201710823109A CN 107462083 B CN107462083 B CN 107462083B
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- vertical shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/04—Distributing or accumulator troughs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F25/00—Component parts of trickle coolers
- F28F25/02—Component parts of trickle coolers for distributing, circulating, and accumulating liquid
- F28F25/08—Splashing boards or grids, e.g. for converting liquid sprays into liquid films; Elements or beds for increasing the area of the contact surface
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/003—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus specially adapted for cooling towers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A cross flow tower applied to a plurality of units and capable of running in a partitioned mode comprises a central three-dimensional through flow vertical shaft, an inner ring water distribution tank and an outer ring water distribution tank which are connected with the central three-dimensional through flow vertical shaft through radiation water distribution tanks; the water distribution tank is divided into a plurality of sectors according to the number of the units, the central three-dimensional through-flow vertical shaft consists of a vertical shaft inner layer and a vertical shaft outer layer, the vertical shaft inner layer is a polygon with the same number as the sectors, and each vertex of the polygon is connected with the vertical shaft outer layer through a vertical shaft sector partition wall; the inner layer of the vertical shaft is divided into a plurality of layers in the vertical direction, different layers correspond to different units, and the inner layer of the vertical shaft forms a runner communicated with different sectors of the same unit; the central three-dimensional through-flow vertical shaft distributes cooling water to the radiation water distribution grooves of the corresponding units, then enters the inner ring water distribution groove and the outer ring water distribution groove, and finally is communicated with the splashing device through the water distribution pipe, and water flowing through the water spraying filler is collected to the fan-shaped water collecting tank; the water inlet pipes and the water outlet pipes of different units are communicated through a communication pipe with a communication valve. The invention can realize regional overhaul and maintenance.
Description
Technical Field
The invention belongs to the field of cooling of a host machine of a thermal power plant, and relates to a cross flow tower which is applied to a plurality of units and can be operated in a partitioned mode.
Background
The power system in China has late application time and less application, is only adopted in the eighties of the last century, and has smaller unit scale. At present, a natural ventilation counter-flow cooling tower is mostly adopted in a circulating cooling mode of a domestic large-capacity thermal power plant, and particularly a cross-flow tower is not adopted in a large-capacity thermal power unit constructed in recent years. The calculation and design data of the cross flow tower are less in China. Compared with the countercurrent tower, the crossflow tower has unique advantages, and is particularly suitable for the situation that the cooling towers of a plurality of units need to be combined and arranged when the field is limited. The existing 50MW two units share one cross flow tower project, the water distribution system mixes and cools the two units, the operation according to the unit system cannot be realized, and the cooling facilities can not meet the requirements of the unit system or the unit system configuration and operation expansion in the standard requirements of the units with the power of more than 200 MW. The existing 350MW two units in China share one countercurrent tower project, and although the operation according to the expansion unit system can be realized, the water distribution system of the countercurrent tower is difficult to realize uniform water distribution of more than three units and realize the expansion unit system. In addition, the water spraying filler of each unit is arranged in a semicircular mode in the existing scheme, and the cooling efficiency of the two units is greatly different under the influence of environmental wind.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a cross flow tower which is applied to a plurality of units and can be operated in a partitioned mode, each unit can realize unit operation and can also realize unit operation expansion, the arrangement of water spraying fillers balances the influence of environmental wind, and meanwhile, the partition overhaul and maintenance of a water spraying filler system and a water distribution system are met.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: comprises a central three-dimensional through-flow vertical shaft, an inner ring water distribution tank and an outer ring water distribution tank which are connected with the central three-dimensional through-flow vertical shaft through a radiation water distribution tank; the inner ring water distribution tank and the outer ring water distribution tank are divided into a plurality of sectors according to the number of the units; the central three-dimensional through-flow vertical shaft consists of a vertical shaft inner layer and a vertical shaft outer layer, wherein the vertical shaft inner layer is a polygon with the same number as that of the sectors, and each vertex of the polygon is connected with the vertical shaft outer layer through a vertical shaft sector partition wall; the vertical shaft inner layer is divided into a plurality of layers by a vertical shaft layered partition wall, different layers correspond to different units, and the vertical shaft inner layer forms a runner communicated with different sectors of the same unit through polygonal opening surfaces and polygonal closing surfaces of all layers;
the circulating cooling water inlet pipe of each unit is led into a central three-dimensional through-flow vertical shaft and a corresponding unit sector thereof through the outer layer of the vertical shaft, the central three-dimensional through-flow vertical shaft distributes circulating cooling water of each unit to the radiation water distribution grooves of the corresponding units, then the circulating cooling water enters the inner ring water distribution groove and the outer ring water distribution groove, and finally the circulating cooling water is communicated with a splashing device through the water distribution pipe, and the splashing device evenly sprays the circulating cooling water above the water spraying filler; the water flowing through the water spraying filler is collected to a fan-shaped water collecting tank which can be collected by a sub-set; the fan-shaped water collecting tank is connected with a water outlet pipe, and the water inlet pipes of the plurality of units are respectively communicated with the water outlet pipe through a communication pipe with a communication valve.
The outer layer of the vertical shaft adopts a polygonal body or a cylinder body with the same number as the sectors.
When the number of the units is 2-6, each unit corresponds to 2-4 sectors, and the sectors of each unit are uniformly and crosswise arranged;
when the number of the units is more than 7, each unit corresponds to 1 sector.
The water distribution pipe is arranged between the inner ring water distribution tank and the outer ring water distribution tank, and is communicated with the inner ring water distribution tank and the outer ring water distribution tank; the central three-dimensional through-flow vertical shaft and the radiation water distribution groove are arranged in the tower barrel; the inner ring water distribution tank, the outer ring water distribution tank, the water distribution pipe, the splashing device, the water spraying filler and the fan-shaped water collection tank are arranged on the periphery of the lower part of the tower barrel.
The number of layers of the central three-dimensional through-flow vertical shaft is more than 2 times of the number of units, and polygonal opening surfaces between adjacent layers are staggered.
And the total flow area of each unit is the same.
A flashboard headstock gear is arranged between the inlet of the radiation water distribution tank and the central three-dimensional through-flow vertical shaft.
The outer side face of the water spraying filler is provided with a shutter, and the inner side face of the water spraying filler is provided with a dehydrator.
Compared with the prior art, the invention has the following beneficial effects: the annular water distribution tank is divided into a plurality of sectors according to the number of the units, a central three-dimensional through-flow vertical shaft is combined and arranged, the central three-dimensional through-flow vertical shaft is divided into a plurality of layers in the vertical direction through a vertical shaft layered partition wall, the space between the inner layer of the vertical shaft and the outer layer of the vertical shaft is divided into the space with the same number of sectors through the vertical shaft layered partition wall, the polygonal opening surface on the inner layer of the vertical shaft and the polygonal sealing surface form a runner communicated with different sectors of the same unit, each layer is opened only by the polygonal opening surface of the inner layer of the vertical shaft corresponding to the sector of the same unit, and finally the circulating cooling water is uniformly sprayed to the top of the water spraying filler through the water distribution pipe and the splashing device. The different layers of the central three-dimensional through-flow vertical shaft correspond to different units, so that the sector operation and the sector maintenance of the cross-flow tower can be realized, the maintenance process has no influence on the water spraying device and the water distribution system, the tower does not need to be stopped comprehensively, the water inlet pipes and the water outlet pipes of the plurality of units are respectively communicated through the connecting pipes with connecting valves, and the connecting valves are regulated, so that the cross-flow vertical shaft can be operated according to unit manufacturing and can be operated according to unit manufacturing expansion.
Furthermore, the sectors of each unit are uniformly and crosswise arranged, so that the influence of environmental wind can be balanced.
Furthermore, the number of layers of the central three-dimensional through-flow vertical shaft is more than 2 times of the number of units, namely, the order is from low to high, the order is the positive order and the reverse order of the unit order number, the total through-flow areas of the units are the same, and the water pressure and the flow can be balanced.
Furthermore, the gate opening and closing machines are respectively arranged at the inlets of the radiation water distribution tanks, and the gate opening and closing machines are used for controlling the on-off of the water entering the radiation water distribution tanks, so that the requirements of regional overhaul and maintenance of the water spraying filling system and the water distribution system are met.
Drawings
FIG. 1 is a schematic diagram of an example plane layout of the invention with three units arranged in the same tower and two sectors for each unit;
FIG. 2 is a schematic diagram of a cross-sectional arrangement of three units in the same tower and two sectors for each unit;
FIG. 3 is a schematic view of the structure of the central three-dimensional through-flow shaft of the present invention;
FIG. 4 is a schematic plan view of a central three-dimensional through-flow shaft of the present invention;
in the accompanying drawings: 1-a tower; 2-sealing plates; 3-a central stereoscopic through-flow shaft; 4-a radiation water distribution tank; 5-an inner ring water distribution tank; 6-an outer ring water distribution groove; 7-a water distribution pipe; 8-a splash device; 9-water spraying filler; 10-a fan-shaped water collecting tank; 11-blinds; 12-a dehydrator; 13-shaft sectorized partition; 14-a vertical shaft layered partition; 15-polygonal opening surfaces; 16-polygonal closing surfaces; 17-flashboard headstock gear; 18-a water inlet pipe; 19-a water outlet pipe; 20-connecting valve; 21-an inner layer of the shaft; 22-shaft outer layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 to 4, in the structure of the cross flow tower of the same tower of the multiple units of the present invention, hot water enters the central three-dimensional through flow shaft 3 through the water inlet pipe 18, and the central three-dimensional through flow shaft 3 is an inner and outer double-layer shaft. The shape of the shaft inner layer 21 is a polygon with the same number of sectors, the shaft outer layer 22 is a polygon or cylinder with the same number of sectors, the area between the shaft inner layer 21 and the shaft outer layer 22 is evenly and equally divided along the circumference according to the number of sectors, and a shaft sector partition wall 13 is arranged; the region of the shaft inner layer 21 is divided into a plurality of layers along the vertical direction, a shaft layered partition wall 14 is arranged, the number of layers is 2 times or more than that of the units, and the sequence from low to high is the positive sequence and the reverse sequence of the sequence numbers of the units. Each layer is only opened by the polygon surface of the same unit sector corresponding to the shaft inner layer 21, namely the polygon opening surface 15, the polygon rest surfaces of the layer are closed, namely the polygon closing surface 22, different layers correspond to different units, and the total flow area of each unit is the same. The central three-dimensional through-flow vertical shaft 3 distributes circulating cooling water of each unit to a radiation water distribution tank 4 of the corresponding unit, then distributes hot water to a water distribution system of a cooling sector, flows into an inner ring water distribution tank 5 and an outer ring water distribution tank 6 which are arranged along the periphery of a tower barrel, flows into a water distribution pipe 7 from the inner ring water distribution tank 5 and the outer ring water distribution tank 6, a splashing device 8 covering the whole filling surface is arranged at the bottom of the water distribution pipe 7, the hot water is evenly sprayed to the top of a water spraying filler 9 below through the splashing device 8, in the water spraying filler 9, the vertically dropped hot water exchanges heat with cold air flowing horizontally, the water temperature of the hot water flowing through the water spraying filler 9 is reduced, and the hot water vertically falls into a fan-shaped water collection tank 10 corresponding to the lower part and is collected through a water outlet main pipe 19 extension group. The water inlet pipes 18 and the water outlet pipes 19 of the multiple units are respectively communicated through a communication pipe with a communication valve 20.
The separation of the fan-shaped water collecting tank 10 corresponds to the water distribution sector, and the collection of the extension sets can be realized.
According to the invention, the water distribution system can be divided into a plurality of uniform water distribution sectors according to the number of the units, when the number of the units is 2-6, each unit is provided with 2-4 sectors, the sectors of each unit can be uniformly distributed in a crossing way, and when the number of the units is more than 7, each unit is provided with 1 sector. The separation of the fan-shaped sump 10 corresponds to the distribution sector and can be collected in sub-sets. The distribution and collection of the circulating cooling water of the multiple units can be operated according to unit systems or enlarged unit systems, and the number of the units is not limited.
The invention can meet engineering requirements, can realize sector operation and sector overhaul of the cross flow tower, has no influence on the water spraying device and the water distribution system during the overhaul of the tower barrel, does not need to stop the tower, and can realize the overhaul of other projects only by partially stopping the tower without stopping the tower completely. The multi-sector cross arrangement of each unit can balance the influence of environmental wind.
The invention can realize the same tower of a plurality of units and make technical reserves for the application of the cross flow tower in engineering practice.
The foregoing is a further elaboration of the present invention, and it is not intended that the invention be limited to the specific embodiments shown, but rather that a number of simple deductions or substitutions be made by one of ordinary skill in the art without departing from the spirit of the invention, all shall be deemed to fall within the scope of the invention as defined in the appended claims.
Claims (8)
1. Be applied to cross flow tower that many units can operate by partition, its characterized in that: comprises a central three-dimensional through-flow vertical shaft (3), an inner ring water distribution tank (5) and an outer ring water distribution tank (6) which are connected with the central three-dimensional through-flow vertical shaft through a radiation water distribution tank (4); the inner ring water distribution tank (5) and the outer ring water distribution tank (6) are divided into a plurality of sectors according to the number of the units; the central three-dimensional through-flow vertical shaft (3) consists of a vertical shaft inner layer (21) and a vertical shaft outer layer (22), wherein the vertical shaft inner layer (21) is a polygon with the same number as that of the sectors, and each vertex of the polygon is connected with the vertical shaft outer layer (22) through a vertical shaft sector partition wall (13); the vertical shaft inner layer (21) is divided into a plurality of layers by a vertical shaft layered partition wall (14), different layers correspond to different units, and the vertical shaft inner layer (21) and the polygonal closed surface (16) form a runner communicated with different sectors of the same unit by polygonal opening surfaces (15) of each layer; the circulating cooling water inlet pipe (18) of each unit is led into the central three-dimensional through-flow vertical shaft (3) and the corresponding unit sector thereof through the vertical shaft outer layer (22), the central three-dimensional through-flow vertical shaft (3) distributes the circulating cooling water of each unit to the radiation water distribution groove (4) of the corresponding unit, then the circulating cooling water enters the inner ring water distribution groove (5) and the outer ring water distribution groove (6), finally, the circulating cooling water is communicated with the splashing device (8) through the water distribution pipe (7), and the splashing device (8) evenly sprays the circulating cooling water above the water spraying filler (9); the water flowing through the water spraying filler (9) is collected to a fan-shaped water collecting tank (10), and the fan-shaped water collecting tank (10) can be collected in a sub-group; the fan-shaped water collecting tank (10) is connected with a water outlet pipe (19), and the water inlet pipes (18) of the multiple units are respectively communicated with the water outlet pipe (19) through a communication pipe with a communication valve (20).
2. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: the shaft outer layer (22) adopts a polygon or a cylinder body with the same number as the sectors.
3. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: when the number of the units is 2-6, each unit corresponds to 2-4 sectors, and the sectors of each unit are uniformly and crosswise arranged;
when the number of the units is more than 7, each unit corresponds to 1 sector.
4. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: the water distribution pipe (7) is arranged between the inner ring water distribution groove (5) and the outer ring water distribution groove (6), and the water distribution pipe (7) is communicated with the inner ring water distribution groove (5) and the outer ring water distribution groove (6); the central three-dimensional through-flow vertical shaft (3) and the radiation water distribution groove (4) are arranged in the tower drum (1); the inner ring water distribution tank (5), the outer ring water distribution tank (6), the water distribution pipe (7), the splashing device (8), the water spraying filler (9) and the fan-shaped water collection tank (10) are arranged on the periphery of the lower part of the tower drum (1).
5. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: the number of layers of the central three-dimensional through-flow vertical shaft (3) is more than 2 times of the number of units, and polygonal opening surfaces (15) between adjacent layers are arranged in a staggered mode.
6. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: and the total flow area of each unit is the same.
7. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: a flashboard headstock gear (17) is arranged between the inlet of the radiation water distribution tank (4) and the central three-dimensional through-flow vertical shaft (3).
8. The cross-flow tower capable of being operated in a partitioned manner for a plurality of units according to claim 1, wherein: the outer side surface of the water spraying filler (9) is provided with a shutter (11), and the inner side surface of the water spraying filler (9) is provided with a dehydrator (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823109.9A CN107462083B (en) | 2017-09-13 | 2017-09-13 | Cross flow tower applied to multiple units and capable of running in partitioned mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710823109.9A CN107462083B (en) | 2017-09-13 | 2017-09-13 | Cross flow tower applied to multiple units and capable of running in partitioned mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107462083A CN107462083A (en) | 2017-12-12 |
| CN107462083B true CN107462083B (en) | 2023-05-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710823109.9A Active CN107462083B (en) | 2017-09-13 | 2017-09-13 | Cross flow tower applied to multiple units and capable of running in partitioned mode |
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| CN108355587B (en) * | 2018-03-09 | 2023-08-29 | 中建安装集团有限公司 | Modularized rotary packed bed |
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| JPH0886592A (en) * | 1994-09-20 | 1996-04-02 | Hitachi Air Conditioning & Refrig Co Ltd | Cooling tower |
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| CN203881204U (en) * | 2014-05-16 | 2014-10-15 | 中国电力工程顾问集团西北电力设计院 | Internal water distributing zoning device of wet natural draft cooling tower |
| CN104729318A (en) * | 2015-03-31 | 2015-06-24 | 山东大学 | Double-layer wet-cooling tower with partitioning walls |
| CN204718481U (en) * | 2015-06-16 | 2015-10-21 | 河南省电力勘测设计院 | A kind of novel cooling tower Central Shaft water distribution system |
| JP2015200449A (en) * | 2014-04-07 | 2015-11-12 | トータルエアーサービス株式会社 | cooling tower |
| CN106971046A (en) * | 2017-04-10 | 2017-07-21 | 中国电力工程顾问集团西南电力设计院有限公司 | A kind of high-order receipts water cooling tower Central Shaft design method |
| CN107084627A (en) * | 2017-05-08 | 2017-08-22 | 华电电力科学研究院 | Large-scale counter-flow cooling tower preventing freeze in winter water dispensing apparatus |
| CN207180403U (en) * | 2017-09-13 | 2018-04-03 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of crossing current tower of more unit partition runnings |
-
2017
- 2017-09-13 CN CN201710823109.9A patent/CN107462083B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0886592A (en) * | 1994-09-20 | 1996-04-02 | Hitachi Air Conditioning & Refrig Co Ltd | Cooling tower |
| JP2007024464A (en) * | 2005-07-21 | 2007-02-01 | Takasago Thermal Eng Co Ltd | Cooling tower |
| CN101762177A (en) * | 2009-12-29 | 2010-06-30 | 浙江大学 | Natural-draught brine cooling tower |
| CN202522125U (en) * | 2012-04-13 | 2012-11-07 | 河北省电力勘测设计研究院 | Circulating water cooling system for power plant |
| JP2015200449A (en) * | 2014-04-07 | 2015-11-12 | トータルエアーサービス株式会社 | cooling tower |
| CN203881204U (en) * | 2014-05-16 | 2014-10-15 | 中国电力工程顾问集团西北电力设计院 | Internal water distributing zoning device of wet natural draft cooling tower |
| CN104729318A (en) * | 2015-03-31 | 2015-06-24 | 山东大学 | Double-layer wet-cooling tower with partitioning walls |
| CN204718481U (en) * | 2015-06-16 | 2015-10-21 | 河南省电力勘测设计院 | A kind of novel cooling tower Central Shaft water distribution system |
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| CN107084627A (en) * | 2017-05-08 | 2017-08-22 | 华电电力科学研究院 | Large-scale counter-flow cooling tower preventing freeze in winter water dispensing apparatus |
| CN207180403U (en) * | 2017-09-13 | 2018-04-03 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of crossing current tower of more unit partition runnings |
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| CN107462083A (en) | 2017-12-12 |
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